Java example source code file (debug_malloc.c)
The debug_malloc.c Java example source code
/*
* Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This source code is provided to illustrate the usage of a given feature
* or technique and has been deliberately simplified. Additional steps
* required for a production-quality application, such as security checks,
* input validation and proper error handling, might not be present in
* this sample code.
*/
/* **************************************************************************
*
* Set of malloc/realloc/calloc/strdup/free replacement macros that
* insert some extra words around each allocation for debugging purposes
* and also attempt to detect invalid uses of the malloc heap through
* various tricks like inserting clobber words at the head and tail of
* the user's area, delayed free() calls, and setting the memory to
* a fixed pattern on allocation and when freed. The allocations also
* can include warrants so that when an area is clobbered, this
* package can report where the allocation took place.
* The macros included are:
* malloc(size)
* realloc(ptr,size)
* calloc(nelem,elsize)
* strdup(s1)
* free(ptr)
* malloc_police() <--- Not a system function
* The above macros match the standard behavior of the system functions.
*
* They should be used through the include file "debug_malloc.h".
*
* IMPORTANT: All source files that call any of these macros
* should include debug_malloc.h. This package will
* not work if the memory isn't allocated and freed
* by the macros in debug_malloc.h. The important issue
* is that any malloc() from debug_malloc.h must be
* freed by the free() in debug_malloc.h.
*
* The macros in debug_malloc.h will override the normal use of
* malloc, realloc, calloc, strdup, and free with the functions below.
*
* These functions include:
* void *debug_malloc(size_t, void*, int);
* void *debug_realloc(void*, size_t, void*, int);
* void *debug_calloc(size_t, size_t, void*, int);
* void debug_free(void *, void*, int);
*
* In addition the function debug_malloc_police() can be called to
* tell you what memory has not been freed.
* void debug_malloc_police(void*, int);
* The function debug_malloc_police() is available through the macro
* malloc_police(). Normally you would want to call this at exit()
* time to find out what memory is still allocated.
*
* The variable malloc_watch determines if the warrants are generated.
* warrants are structures that include the filename and line number
* of the caller who allocated the memory. This structure is stored
* at the tail of the malloc space, which is allocated large enough
* to hold some clobber words at the head and tail, the user's request
* and the warrant record (if malloc_watch is non-zero).
*
* The macro LEFT_OVER_CHAR is what the trailing bytes of an allocation
* are set to (when the allocation is not a multiple of 8) on allocation.
* At free(0 time, these bytes are double checked to make sure they were
* not clobbered. To remove this feature #undef LEFT_OVER_CHAR.
*
* The memory freed will have the FREED_CHAR put into it. To remove this
* feature #undef FREED_CHAR.
*
* The memory allocated (not calloc'd) will have the ALLOC_CHAR put into it
* at the time of allocation. To remove this feature #undef ALLOC_CHAR.
*
* The macro MAX_FREE_DELAY_COUNT controls how many free blocks will
* be kept around before being freed. This creates a delayed affect
* so that free space that gets clobbered just might get detected.
* The free() call will immediately set the user space to the FREED_CHAR,
* leaving the clobber words and warrant in place (making sure they
* haven't been clobbered). Then the free() pointer is added to a
* queue of MAX_FREE_DELAY_COUNT long, and if the queue was full, the
* oldest free()'d memory is actually freed, getting it's entire
* memory length set to the FREED_CHAR.
*
* WARNING: This can significantly slow down an application, depending
* on how many allocations are made. Also the additional memory
* needed for the clobber words and the warrants can be significant
* again, depending on how many allocations are made.
* In addition, the delayed free calls can create situations
* where you might run out of memory prematurely.
*
* **************************************************************************
*/
#ifdef DEBUG
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include "hprof.h"
/* ***************************************************************************
* Space normally looks like (clobber Word is 64 bits and aligned to 8 bytes):
*
* -----------------
* malloc/free get->| clobber Word | ---> contains -size requested by user
* -----------------
* User gets --->| user space |
* | |
* | | left_over | ---> left_over bytes will be <= 7
* -----------------
* | clobber Word | ---> contains -size requested by user
* -----------------
* | Warrant | ---> Optional (malloc_watch!=0)
* | | Contains filename and line number
* | | where allocation happened
* | |
* -----------------
***************************************************************************/
/*
* Flag that tells debug_malloc/debug_free/debug_realloc to police
* heap space usage. (This is a dynamic flag that can be turned on/off)
*/
static int malloc_watch = 1;
/* Character to stuff into freed space */
#define FREED_CHAR 'F'
/* Character to stuff into allocated space */
#define ALLOC_CHAR 'A'
/* Character to stuff into left over trailing bytes */
#define LEFT_OVER_CHAR 'Z'
/* Number of 'free' calls that will be delayed until the end */
#define MAX_FREE_DELAY_COUNT 1
#undef MAX_FREE_DELAY_COUNT
/* Maximum name of __FILE_ stored in each malloc'd area */
#define WARRANT_NAME_MAX (32-1) /* 1 less than multiple of 8 is best */
/* Macro to convert a user pointer to the malloc pointer */
#define user2malloc_(uptr) (((char*)(void*)uptr)-sizeof(Word))
/* Macro to convert a macro pointer to the user pointer */
#define malloc2user_(mptr) (((char*)(void*)(mptr))+sizeof(Word))
/* Size of the warrant record (this is dynamic) */
#define warrant_space ( malloc_watch?sizeof(Warrant_Record):0 )
/* Macro to round up a number of bytes to a multiple of sizeof(Word) bytes */
#define round_up_(n) \
((n)==0?0:(sizeof(Word)+(((n)-1)/sizeof(Word))*sizeof(Word)))
/* Macro to calculate the needed malloc bytes from the user's request. */
#define rbytes_(nbytes) \
(size_t)( sizeof(Word) + round_up_(nbytes) + sizeof(Word) + warrant_space )
/* Macro to get the -size stored in space through the malloc pointer */
#define nsize1_(mptr) (((Word*)(void*)(mptr))->nsize1)
#define nsize2_(mptr) (((Word*)(void*)(mptr))->nsize2)
/* Macro to get the -size stored in the tail of the space through */
/* the malloc pointer */
#define tail_nsize1_(mptr) \
nsize1_(((char*)(void*)(mptr))+round_up_(-nsize1_(mptr))+sizeof(Word))
#define tail_nsize2_(mptr) \
nsize2_(((char*)(void*)(mptr))+round_up_(-nsize1_(mptr))+sizeof(Word))
/* Macro to get the -size stored in space through the user pointer */
#define user_nsize1_(uptr) nsize1_(user2malloc_(uptr))
#define user_nsize2_(uptr) nsize2_(user2malloc_(uptr))
/* Macro to get the -size stored in the tail of the space through */
/* the user pointer */
#define user_tail_nsize1_(uptr) tail_nsize1_(user2malloc_(uptr))
#define user_tail_nsize2_(uptr) tail_nsize2_(user2malloc_(uptr))
/* Macro to get the int* of the last 32bit word of user space */
#define last_user_word_(mptr) \
((int*)(((char*)(void*)(mptr))+round_up_(-nsize1_(mptr))))
/* Macros to get at the warrant contents from the malloc pointer */
#define warrant_(mptr) \
(*((Warrant_Record*)(void*)(((char*)(void*)(mptr))+round_up_(-nsize1_(mptr))+sizeof(Word)*2)))
/* This struct is allocated after the tail clobber word if malloc_watch */
/* is true. */
typedef struct {
void *link; /* Next mptr in list */
char name[WARRANT_NAME_MAX + 1]; /* Name of allocator */
int line; /* Line number where allocated */
int id; /* Nth allocation */
} Warrant_Record;
#define warrant_link_(mptr) warrant_(mptr).link
#define warrant_name_(mptr) warrant_(mptr).name
#define warrant_line_(mptr) warrant_(mptr).line
#define warrant_id_(mptr) warrant_(mptr).id
#define MFILE(mptr) (malloc_watch?warrant_name_(mptr):"?")
#define MLINE(mptr) (malloc_watch?warrant_line_(mptr):0)
#define MID(mptr) (malloc_watch?warrant_id_(mptr):0)
/* This should be one machine word and is also the clobber word struct */
typedef struct {
int nsize1;
int nsize2;
} Word; /* Largest basic type , sizeof(double)? */
/* The first malloc pointer for the warrants */
static void *first_warrant_mptr = NULL;
/* Counter of allocations */
static int id_counter = 0;
static int largest_size = 0;
static void * largest_addr = NULL;
static void * smallest_addr = NULL;
/* Used to isolate what the error is */
static char *debug_check;
static void *clobbered_ptr;
/* Minimum macro */
#define minimum(a,b) ((a)<(b)?(a):(b))
/* Message routine */
static void
error_message(const char * format, ...)
{
FILE *error_fp = stderr; /* All debug_malloc.c messages */
va_list ap;
va_start(ap, format);
(void)fprintf(error_fp, "debug_malloc: ");
(void)vfprintf(error_fp, format, ap);
(void)fprintf(error_fp, "\n");
(void)fflush(error_fp);
va_end(ap);
}
/* This function prints out a memory error for the memory function
* 'name' which was called in file 'file' at line number 'line'. The malloc
* pointer with the error is in 'mptr'.
*/
static void
memory_error(void *mptr, const char *name, int mid, const char *mfile, int mline, const char *file, int line)
{
char nice_words[512];
char temp[256];
int len;
void *mptr_walk;
if (name == NULL)
name = "UNKNOWN_NAME";
if (file == NULL)
file = "UNKNOWN_FILE";
md_system_error(temp, (int)sizeof(temp));
(void)strcpy(nice_words, temp);
if ( debug_check!=NULL ) {
(void)md_snprintf(nice_words, sizeof(nice_words),
"%s The %s at %p appears to have been hit.",
temp, debug_check, clobbered_ptr);
}
len = -nsize1_(mptr);
error_message("Error: "
"%s The malloc space #%d is at %p [user size=%d(0x%x)],"
" and was allocated from file \"%s\" at line %d."
" [The debug function %s() detected this error "
"in file \"%s\" at line %d.]",
nice_words, mid, mptr, len, len, mfile, mline,
name, file, line);
/* Print out contents of this allocation */
{
int i;
void *uptr = malloc2user_(mptr);
char *pmess;
pmess = temp;
for(i=0;i<(int)sizeof(temp);i++) {
int ch = ((unsigned char*)uptr)[i];
if ( isprint(ch) ) {
*pmess++ = ch;
} else {
*pmess++ = '\\';
*pmess++ = 'x';
(void)sprintf(pmess,"%02x",ch);
pmess+=2;
}
}
*pmess = 0;
error_message("Error: %p contains user data: %s", uptr, temp);
}
/* Try and print out table */
if (!malloc_watch) {
return;
}
mptr_walk = first_warrant_mptr;
if (mptr_walk != NULL) {
error_message("Active allocations: "
"count=%d, largest_size=%d, address range (%p,%p)",
id_counter, largest_size, smallest_addr, largest_addr);
do {
int size1;
int size2;
char *mfile_walk;
if ( mptr_walk > largest_addr || mptr_walk < smallest_addr ) {
error_message("Terminating list due to pointer corruption");
break;
}
size1 = -nsize1_(mptr_walk);
size2 = -nsize2_(mptr_walk);
mfile_walk = MFILE(mptr_walk);
error_message("#%d: addr=%p size1=%d size2=%d file=\"%.*s\" line=%d",
MID(mptr_walk), mptr_walk, size1, size2,
WARRANT_NAME_MAX, mfile_walk, MLINE(mptr_walk));
if ( size1 != size2 || size1 > largest_size || size1 < 0 ) {
error_message("Terminating list due to size corruption");
break;
}
mptr_walk = warrant_link_(mptr_walk);
} while (mptr_walk != NULL);
}
abort();
}
/* This function sets the clobber word and sets up the warrant for the input
* malloc pointer "mptr".
*/
static void
setup_space_and_issue_warrant(void *mptr, size_t size, const char *file, int line)
{
register int nbytes;
/*LINTED*/
nbytes = (int)size;
if ( nbytes > largest_size || largest_addr == NULL ) largest_size = nbytes;
/*LINTED*/
if ( mptr > largest_addr ) largest_addr = mptr;
/*LINTED*/
if ( mptr < smallest_addr || smallest_addr == NULL ) smallest_addr = mptr;
/* Must be done first: */
nsize1_(mptr) = -nbytes;
nsize2_(mptr) = -nbytes;
tail_nsize1_(mptr) = -nbytes;
tail_nsize2_(mptr) = -nbytes;
#ifdef LEFT_OVER_CHAR
/* Fill in those few extra bytes just before the tail Word structure */
{
register int trailing_extra_bytes;
/* LINTED */
trailing_extra_bytes = (int) (round_up_(nbytes) - nbytes);
if ( trailing_extra_bytes > 0 ) {
register char *p;
register int i;
p = ((char *) mptr) + sizeof(Word) + nbytes;
for (i = 0; i < trailing_extra_bytes; i++)
p[i] = LEFT_OVER_CHAR;
}
}
#endif
/* Fill out warrant */
if (malloc_watch) {
static Warrant_Record zero_warrant;
register void *p1,
*p2;
size_t len;
int start_pos = 0;
warrant_(mptr) = zero_warrant;
p1 = warrant_name_(mptr);
len = strlen(file);
if ( len > WARRANT_NAME_MAX ) {
/*LINTED*/
start_pos = (int)len - WARRANT_NAME_MAX;
}
p2 = ((char*)file) + start_pos;
/*LINTED*/
(void) memcpy(p1, p2, minimum(((int)len), WARRANT_NAME_MAX));
warrant_line_(mptr) = line;
warrant_id_(mptr) = ++id_counter;
warrant_link_(mptr) = first_warrant_mptr;
first_warrant_mptr = mptr;
}
}
/* This function checks the clobber words at the beginning and end of the
* allocated space.
*/
static void
memory_check(void *uptr, int mid, const char *mfile, int mline, const char *file, int line)
{
int neg_nbytes;
int nbytes;
debug_check = "pointer value itself";
clobbered_ptr = uptr;
if (uptr == NULL)
memory_error((void *) NULL, "memory_check", mid, mfile, mline, file, line);
/* Check both Word structures */
debug_check = "first beginning clobber word";
clobbered_ptr = (char*)&user_nsize1_(uptr);
neg_nbytes = user_nsize1_(uptr);
if (neg_nbytes >= 0)
memory_error(user2malloc_(uptr), "memory_check", mid, mfile, mline, file, line);
debug_check = "second beginning clobber word";
clobbered_ptr = (char*)&user_nsize2_(uptr);
if (neg_nbytes != user_nsize2_(uptr))
memory_error(user2malloc_(uptr), "memory_check", mid, mfile, mline, file, line);
debug_check = "first ending clobber word";
clobbered_ptr = (char*)&user_tail_nsize1_(uptr);
if (neg_nbytes != user_tail_nsize1_(uptr))
memory_error(user2malloc_(uptr), "memory_check", mid, mfile, mline, file, line);
debug_check = "second ending clobber word";
clobbered_ptr = (char*)&user_tail_nsize2_(uptr);
if (neg_nbytes != user_tail_nsize2_(uptr))
memory_error(user2malloc_(uptr), "memory_check", mid, mfile, mline, file, line);
/* Get a positive count of bytes */
nbytes = -neg_nbytes;
#ifdef LEFT_OVER_CHAR
{
/* Check those few extra bytes just before the tail Word structure */
register int trailing_extra_bytes;
register int i;
register char *p;
/* LINTED */
trailing_extra_bytes = (int) (round_up_(nbytes) - nbytes);
p = ((char *) (uptr)) + nbytes;
debug_check = "trailing left over area";
for (i = 0; i < trailing_extra_bytes; i++) {
clobbered_ptr = p+1;
if (p[i] != LEFT_OVER_CHAR) {
memory_error(user2malloc_(uptr), "memory_check", mid, mfile, mline, file, line);
}
}
}
#endif
/* Make sure debug_check is cleared */
debug_check = NULL;
}
/* This function looks for the given malloc pointer in the police line up
* and removes it from the warrant list.
* mptr The pointer to the malloc space being removed
*/
static int
remove_warrant(void *mptr)
{
void *mptr1,
*last_mptr1;
/* Free it up from the list */
if (malloc_watch && mptr != NULL) {
int found;
found = 0;
last_mptr1 = NULL;
mptr1 = first_warrant_mptr;
while (mptr1 != NULL) {
if (mptr1 == mptr) {
if (last_mptr1 == NULL)
first_warrant_mptr = warrant_link_(mptr1);
else
warrant_link_(last_mptr1) = warrant_link_(mptr1);
found = 1;
break;
}
last_mptr1 = mptr1;
mptr1 = warrant_link_(mptr1);
}
return found;
}
return 1;
}
static void
actual_free(void *uptr, const char *file, int line)
{
void *mptr;
const char *mfile;
int mline;
int mid;
if ( uptr == NULL )
return;
mptr = user2malloc_(uptr);
memory_check(uptr, (mid=MID(mptr)), (mfile=MFILE(mptr)), (mline=MLINE(mptr)), file, line);
if (malloc_watch && remove_warrant(mptr)==0 )
memory_check(uptr, mid, mfile, mline, file, line);
#ifdef FREED_CHAR
if ( mptr!=NULL ) {
size_t nbytes = -nsize1_(mptr);
/* LINTED */
(void)memset(mptr, FREED_CHAR, rbytes_(nbytes));
}
#endif
free(mptr);
}
#ifdef MAX_FREE_DELAY_COUNT
static void *free_delay[MAX_FREE_DELAY_COUNT];
static int free_delay_pos = 0;
static void
delayed_free(void *uptr, const char* file, int line)
{
void *mptr;
void *olduptr = free_delay[free_delay_pos];
size_t nbytes;
if ( uptr==NULL )
return;
mptr = user2malloc_(uptr);
memory_check(uptr, MID(mptr), MFILE(mptr), MLINE(mptr), file, line);
if ( olduptr!=NULL ) {
actual_free(olduptr, file, line);
}
free_delay[free_delay_pos] = uptr;
free_delay_pos++;
free_delay_pos = free_delay_pos % MAX_FREE_DELAY_COUNT;
nbytes = -user_nsize1_(uptr);
#ifdef FREED_CHAR
(void)memset(uptr, FREED_CHAR, (size_t)nbytes);
#endif
}
static void
delayed_free_all(const char *file, int line)
{
int i;
for ( i=0; i< MAX_FREE_DELAY_COUNT; i++) {
void *olduptr = free_delay[i];
free_delay[i] = NULL;
if ( olduptr!=NULL ) {
actual_free(olduptr, file, line);
}
}
}
#endif
void
debug_free(void *uptr, const char *file, int line)
{
int mid = 0;
if (uptr == NULL)
memory_error((void *) NULL, "debug_free", mid, file, line, file, line);
#ifdef MAX_FREE_DELAY_COUNT
delayed_free(uptr, file, line);
#else
actual_free(uptr, file, line);
#endif
}
/* This function calls malloc(). */
void *
debug_malloc(size_t nbytes, const char *file, int line)
{
void *mptr;
void *uptr;
int mid = id_counter;
/*LINTED*/
if ((int)nbytes <= 0)
memory_error((void *) NULL, "debug_malloc", mid, file, line, file, line);
/* LINTED */
mptr = malloc(rbytes_(nbytes));
if (mptr == NULL)
memory_error((void *) NULL, "debug_malloc", mid, file, line, file, line);
setup_space_and_issue_warrant(mptr, nbytes, file, line);
uptr = malloc2user_(mptr);
#ifdef ALLOC_CHAR
(void)memset(uptr, ALLOC_CHAR, (size_t)nbytes);
#endif
return uptr;
}
void *
debug_realloc(void *uptr, size_t nbytes, const char *file, int line)
{
void *mptr;
void *oldmptr;
void *newuptr;
size_t oldnbytes;
int mid = id_counter;
oldmptr = user2malloc_(uptr);
oldnbytes = 0;
if ((int)nbytes <= 0)
memory_error(oldmptr, "debug_realloc", mid, file, line, file, line);
if (uptr != NULL) {
memory_check(uptr, MID(oldmptr), MFILE(oldmptr), MLINE(oldmptr), file, line);
oldnbytes = -user_nsize1_(uptr);
if ( malloc_watch && remove_warrant(oldmptr)==0 )
memory_check(uptr, MID(oldmptr), MFILE(oldmptr), MLINE(oldmptr), file, line);
}
if (uptr == NULL) {
/* LINTED */
mptr = malloc(rbytes_(nbytes));
} else {
/* LINTED */
mptr = realloc(oldmptr, rbytes_(nbytes));
}
if (mptr == NULL)
memory_error(oldmptr, "debug_realloc", mid, file, line, file, line);
setup_space_and_issue_warrant(mptr, nbytes, file, line);
newuptr = malloc2user_(mptr);
#ifdef ALLOC_CHAR
if (uptr == NULL)
(void)memset(newuptr, ALLOC_CHAR, (size_t)nbytes);
else if ( nbytes > oldnbytes )
(void)memset(((char*)newuptr)+oldnbytes, ALLOC_CHAR, (size_t)nbytes-oldnbytes);
#endif
return newuptr;
}
/* This function calls calloc(). */
void *
debug_calloc(size_t nelem, size_t elsize, const char *file, int line)
{
void *mptr;
size_t nbytes;
int mid = id_counter;
nbytes = nelem*elsize;
/*LINTED*/
if ((int)nbytes <= 0)
memory_error((void *) NULL, "debug_calloc", mid, file, line, file, line);
/* LINTED */
mptr = calloc(rbytes_(nbytes),1);
if (mptr == NULL)
memory_error((void *) NULL, "debug_calloc", mid, file, line, file, line);
setup_space_and_issue_warrant(mptr, nbytes, file, line);
return malloc2user_(mptr);
}
/* This function replaces strdup(). */
char *
debug_strdup(const char *s1, const char *file, int line)
{
void *mptr;
void *uptr;
size_t nbytes;
int mid = id_counter;
if (s1 == NULL)
memory_error((void *) NULL, "debug_strdup", mid, file, line, file, line);
nbytes = strlen(s1)+1;
/*LINTED*/
if ((int)nbytes < 0)
memory_error((void *) NULL, "debug_strdup", mid, file, line, file, line);
/* LINTED */
mptr = malloc(rbytes_(nbytes));
if (mptr == NULL)
memory_error((void *) NULL, "debug_strdup", mid, file, line, file, line);
setup_space_and_issue_warrant(mptr, nbytes, file, line);
uptr = malloc2user_(mptr);
(void)strcpy((char*)uptr, s1);
return (char*)uptr;
}
void
debug_malloc_verify(const char *file, int line)
{
void *mptr;
#ifdef MAX_FREE_DELAY_COUNT
delayed_free_all(file,line);
#endif
if (!malloc_watch) {
return;
}
mptr = first_warrant_mptr;
if (mptr != NULL) {
/* Check all this memory first */
do {
memory_check(malloc2user_(mptr), MID(mptr), MFILE(mptr), MLINE(mptr), file, line);
mptr = warrant_link_(mptr);
} while (mptr != NULL);
}
}
/* Report outstanding space warrants to console. */
void
debug_malloc_police(const char *file, int line)
{
void *mptr;
#ifdef MAX_FREE_DELAY_COUNT
delayed_free_all(file,line);
#endif
if (!malloc_watch) {
return;
}
mptr = first_warrant_mptr;
if (mptr != NULL) {
debug_malloc_verify(file, line);
/* Now issue warrants */
mptr = first_warrant_mptr;
do {
error_message("Outstanding space warrant: %p (%d bytes) allocated by %s at line %d, allocation #%d",
mptr, -nsize1_(mptr), warrant_name_(mptr),
warrant_line_(mptr), warrant_id_(mptr));
mptr = warrant_link_(mptr);
} while (mptr != NULL);
}
}
#else
void
debug_malloc_verify(const char *file, int line)
{
file = file;
line = line;
}
void
debug_malloc_police(const char *file, int line)
{
file = file;
line = line;
}
#endif
Other Java examples (source code examples)Here is a short list of links related to this Java debug_malloc.c source code file: |
The search page
Other Java source code examples at this package level
Click here to learn more about this project
